I found out you can zoom out and attack using the mouse. It's not actually explained.
Combat doesn't really work yet even then. You get knocked out immediately, end up at 2 hp and die the moment something else hits you, which means you need to reopen the game. Health does not recover. Maybe if you leave it open for an hour or something. The camps are too big to fight, if you manage to find one with a singular enemy approaching you you will have a hard time not getting knocked out or killed so I have not been able to see anything but walking around.
On one attempt, there were 2 camps next to each other, one camp ended up with only one enemy, I was able to approach multiple times before getting killed but it seems they recover health back in their camp or just don't take damage to begin with.
The map can also trap you within water at the start.
I like the lightweight approach. But it seems too early to play.